DAYTONA BEACH, Fla. (AP)—Darrell Wallace Jr. sobbed in his mother’s arms after he posted the best finish for a Black driver in the Daytona 500.

Wallace was runner-up to winner Austin Dillon, and the emotion of the achievement hit the rookie driver inside the track’s media center. Wallace, the son of a Black mother and a white father, cried with his mother and then with his sister on the stage.

Desiree Wallace told her son how much she loved him, and sister Brittany, who gave her kid brother his nickname “Bubba,” told her brother how proud she was of him.

Wallace was second in the famed No. 43 car for Richard Petty Motorsports.

Wallace was the first Black driver to start the Daytona 500 since Wendell Scott in 1969. Scott was 13th in the 1966 race, the previous best finish for a Black driver at Daytona. Richard Petty rarely visits pit road after a race anymore and usually with good reason. The Hall of Fame driver's eponymous race team has toiled for decades in mediocrity, with checkered flags all but extinct.

Bubba at Daytona changed the game.

The King strolled to the pits and hugged Wallace. The 80-year-old Petty wrapped his arm around Wallace, and they walked off smiling toward what each side hoped was the start of a fruitful alliance.

“I just had a guard walk me from pit road to the media center. His name is Richard Petty. I've never seen him so excited in my life,” Wallace said.

That Wallace can energize Petty may symbolize as much a true passing of the torch as NASCAR could want: Petty and his deep kinship with old-school fans and the 24-year-old Wallace, a video game playing, social media darling about to make history as the first Black driver since 1969 in the Daytona 500.

Busting down racial barriers in a sport long reserved for whites is heavy stuff for Wallace, and he's keenly aware all eyes are on him. The rookie invites glare from his fans and haters, starring in his own eight-episode docu-series “Behind the Wall: Bubba Wallace,” on the Facebook Watch show page.

“There's a lot of stuff that's riding on this weekend. I know it. I pay attention to it,” Wallace said. “I follow a lot of people on social media, and it's being put out there. But I'm doing my best at managing it, keeping it behind me, and that's the best thing I can do.”

Wallace is one of at least eight Black drivers in NASCAR's 70-year history who reached the Cup level: Elias Bowie, Charlie Scott, George Wiltshire, Randy Bethea, Willy T. Ribbs and Bill Lester. Wendell Scott, who made the last start for a Black driver in the Daytona 500, is the only one to win a Cup race, on Dec. 1, 1963. The next win at a NASCAR national event by a Black driver came in 2013 when Wallace took the Truck Series checkered flag at Martinsville.

Wallace, raised in Concord, North Carolina, has the full support of the Black drivers before him. Lester sent him encouraging tweets. Wallace met some of Scott's children.

But none of the Black drivers who raced before arrived with this kind of full-blown promotional push, acceptance in the garage and a solid ride that got him a seventh-place start in the Daytona 500. Wallace went 196.954 mph on Saturday to top the speed chart in the final practice for the Daytona 500.

More commonly known by his childhood nickname “Bubba,” the easygoing Wallace handled the spotlight with ease.

Wallace wants to show ‘em all—Black, Hispanic, kids, any race fan—that he's worthy of becoming a driver to root for and can live up to the lofty pressure heaped on him this season.

Though Confederate flags still dot the infield, Wallace said racism in all forms was nonexistent in NASCAR's developmental series. At the grassroots level, Wallace heard racial insults and ran into ignorant views. The rise of social media has made it easier for hate to spread, and a high school football coach in Wisconsin resigned last year for a series or racist tweets aimed at Wallace.

Wallace tweeted in response : “There is only 1 driver from an African American background at the top level of our sport. I am the 1. You're not gonna stop hearing about “the Black driver” for years. Embrace it, accept it and enjoy the journey.”

NASCAR's three-year talent drain that saw bankable stars Jeff Gordon, Dale Earnhardt Jr., Danica Patrick, Tony Stewart and Matt Kenseth all leave the sport left a massive void that Wallace and a crop of 25-and-under talent must fill in more ways than behind the wheel.

“I think with the amount of coverage that I'm getting right now and the entourage that I have following, a lot of people expect, ‘Oh, who's this kid coming up through with this media? He should be winning,”' Wallace said.

He won six times in 45 starts in the Truck Series, went 0 for 85 in the second-level Xfinity Series and improved each race (26th-19th-15th-11th) in Cup when he raced for the injured Aric Almirola. When Almirola left for Stewart-Haas Racing, Wallace got the call from The King to drive for RPM.

“He didn't say change this or do this,” Petty said. “He let the crew figure out what to do with the car and he'd drive it.”

Wallace interrupted the boss who won 200 NASCAR races.

“I started telling him the changes now because it's my car this year and last year it wasn't,” Wallace said.

The King and Wallace bumped elbows and shared a laugh over who was really calling the shots on the No. 43 car.

Ryan Blaney, Wallace's best buddy and frequent partner-in-party on social media, said Wallace will finally get to show off all his talent.

“I know a lot of people have given him not a lot of credit in the offseason,” Blaney said. “I think he proved himself (at Daytona) that he should be here and deserves to be here. I hope he can continue to do that.”

Wallace, Kyle Larson, and 2016 Xfinity champ Daniel Suarez have benefited from NASCAR's efforts to diversify the field and perhaps give the sagging sport a boost while helping attract a new generation of fans. NASCAR has widened its minority outreach efforts in a variety of ways: running diversity programs for drivers and pit crew development; outreach programs like NASCAR Hispanic Marketing and NASCAR Latino; and diversity awards held each year to honor inclusion throughout motorsports.

NASCAR research showed diversity among its fan base has grown from 20 to 24 percent over the last five years.

“I think having a Black driver in the race is going to have a potentially dramatically impact on the fan base which often looks to who is driving and if they can identify with somebody,” said Richard Lapchick, founder of The Institute for Diversity and Ethics in Sports at the University of Central Florida.

“This weekend, it's more of a comfort feeling. It's more of a, ‘Hey there's somebody who looks like me in this race.' It's, ‘Maybe NASCAR is more open than I thought it was' for those who aren't fans now.”

Like Wallace wrote on Twitter, NASCAR hopes millennials on up will embrace him, accept him and enjoy the journey.

That journey started Sunday at NASCAR's most famous race, with a famed car number and with the weight of a sport craving its first Black star along for the ride.